$ git clone -n https://src.fedoraproject.org/rpms/nanosvg.git /var/lib/mock/f40-build-2012428-45788/root/chroot_tmpdir/scmroot/nanosvg
Cloning into '/var/lib/mock/f40-build-2012428-45788/root/chroot_tmpdir/scmroot/nanosvg'...
$ git fetch origin 8936549fa215017f4b06ec3f74a666b6f08933d6:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/nanosvg
 * [new ref]         8936549fa215017f4b06ec3f74a666b6f08933d6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8936549 initial package